Question 183) - Is sequence Wajib between Witr and Farce?

A: Yes. If he does pray the Witr before the 'Isha, then it is Wajib to repeat the Witr after praying 'Isha. If he fell asleep without having prayed Witr and dawn has set in, it is Wajib for him to pray Witr before he prays Fajr. If he does the opposite he must repeat Fajr.

~ al-Quduri ~